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Mutual ActSize guide

Find your fit.

Measurements for rings, necklaces and bracelets — and how to take them at home.

Rings

Our ring sizes are the inner diameter in millimetres. To find yours, wrap a strip of paper around your finger, mark where it meets, and measure the length in mm — that’s your circumference. If you know your US size, use the last column as a guide.

Size (inner diameter)CircumferenceUS size
13.5 mm42.4 mm≈ 2
15 mm47.1 mm≈ 4
15.5 mm48.7 mm≈ 5
16 mm50.3 mm≈ 5½
17 mm53.4 mm≈ 6½
17.5 mm55.0 mm≈ 7¼
18 mm56.5 mm≈ 8
19 mm59.7 mm≈ 9
20 mm62.8 mm≈ 10¼

Necklaces

To find your length, measure a chain you already wear comfortably.

LengthWhere it sits
14 in / 36 cmChoker — sits snug at the base of the neck
16 in / 41 cmSits right on the collarbone
18 in / 46 cmJust below the collarbone — most popular
20 in / 51 cmRests on the chest
24 in / 61 cmFalls below the neckline

Bracelets

Measure around your wrist just below the wrist bone.

SizeWrist
S14–15 cm
M15–16.5 cm
L16.5–18 cm

Still unsure? Get in touch and we’ll help you find the right fit.